Newbie GAE questions on pricing

[Albert Kam]

Hello all !

Im very interested in making use of GAE for my next startup ideas, and i have these doubts on pricing.
Please correct if i have wrong understanding with the my simple example below, based on the new pricing model defined at http://www.google.com/enterprise/appengine/appengine_pricing.html :

1) My understanding on the basic calculation
Outgoing bandwidth
The bytes that the server returns to the client, let's say, 10kbytes compressed for each response

Incoming bandwith
The bytes that the server receives from each of client's request, let's say, 5kbytes per request

Let's assume also that this app has 20 billions pages views per month like craiglist, so the calculation would be :

Outgoing bandwidth : (10kbytes * 20g) - 30gbytes == 200.000gbytes - 30gbytes == 200.000 - 30 == 199.970 gbytes / month
pricing : 199.970 * 0.12 == 24k dollars per month

Incoming bandwidth : (5kbytes * 20g) - 30gbytes == 100.000gbytes - 30gbytes == 100.000 - 30 == 99.970 gbytes / month
pricing : 99.970 * 0.10 == 10k dollars per month

I have bad math, and thus unsure whether these calculations are correct ?

2) Other factors that i dont understand
Could anyone please help me add the cost of On-demand Frontend Instance, Reserved Frontend Instances, High Replication Datastore to the example, because i dont really understand how these works ? Just a rough example would do.

3) Tax
It is said that these numbers have not been taxed yet, and since im living in Indonesia, would you please share the tax price for my country ?
Im a little bit uncomfortable to ask this, but does GAE has a lower price for developers from 3rd countries ?

Please share your views on these
Thank you !
Thank you !

[Albert Kam]

I dont want to behave badly, but ..

Any thoughts on this would be very helpful for my well being .. :)

Thank you

[steuke]

Hi Albert,

I believe the reason that you have not gotten an answer for your
question is that nobody knows an answer. After all, the prices are
only a preview (note the sub-heading: "The following pricing and
features are an advance preview and not immediately available.").

Or maybe somebody knows an answer?

Best,
Stefan

[Robert Kluin]

It is impossible for anyone to give you any estimates without knowing
some very specific details about your app. You can easily calculate
it using a spreadsheet and some best-guesses though.

Right now I see apps serving (well) under 1 qps per instance (even
with sub 100ms latency). An instance is going to cost $0.08 / hour.
So you can probably assume that you'll pay at least $2.22 / 100000
requests, unless they significantly improve the scheduler.

You also need to factor in your datastore operations cost, which is
likely to be significant as well. That number will be highly
dependent on your app. If you simple write one entity (with a couple
indexes) per request you'll likely see at least $0.50 / 100000 -- if
you actually query data too that cost will multiply.

Get out your spreadsheet and do some estimates. Your guess is likely
as good as anyone else's at this point.

Robert

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[Albert Kam]

Hello Steuke,

I just wanted to share my simple calculation and ask for opinions based on their experiences.
Thanks for your insight.

Best regards,
Albert Kam

[Albert Kam]

Hello Robert,

Im so happy that i finally get to see some numbers based on experience !
If it's not too much for you, do you mind sharing a little about your app, like :

• how many hits or bandwidths daily or monthly,
• and storage usage approximation daily or monthly,
• and how much does it cost you daily or monthly.

And if you're living outside of the states, do you mind sharing the outside-US-taxing issue ?

Thank you !
Albert Kam

[Robert Kluin]

Hey Albert,
I work with and maintain a variety of apps with varying loads. They
are each pretty different, so I doubt me sharing my numbers with you
will help much.

Robert

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[Albert Kam]

Hello again Robert !

I see. I agree with that i wont be able to base on that.
I was just hoping for some approximation though, like this one busiest app, having 5million visits per month and consuming such request n response bandwidth, the storage for that month is this, and the price per month is this, you know, to get the feeling on the pricing.

I really hope that google can provide an example for the cost calculation.

If i can see the numbers, i can have that feeling whether the cost is ok for me.
But so far from others' experience from the internet i found, the cost seems to be very economical.

Thanks again !
Albert Kam

--
Do not pursue the past. Do not lose yourself in the future.
The past no longer is. The future has not yet come.
Looking deeply at life as it is in the very here and now,
the practitioner dwells in stability and freedom.
(Thich Nhat Hanh)

[Albert Kam]

[Albert Kam]

Hi there !

Translated from google translate :

Guanghan are you?
If your words. Tell you that no one had asked
This question is like asking people how much to spend raising a child, of course, different for each person

Im not Guanghan, im Albert Kam from Indonesia. Still illiterate on chinese writings. =)
Yes, i kinda understand the difficulty in answering such a question like mine.

But what i would like to get is just the basic cost calculation, that even counts when considering how much to spend in raising a child, like the school fee in this school, this milk with this brand will cost this, and when taken this much, will cost this per month ..

I think it's the same with this case, if i can get like this site, has so many hits, consumes approximately such bandwidths, such storage per month, and this is the approximate cost.

Just the basic calculation from a real example.

I guess i just have to do it myself when trying my app in GAE, look at the statistics (hope this is possible), and after that, do some calculation on the costs.

Thank you for your insights !

[Robert Kluin]

Take a look at your logs, there will be a CPM number that will be
useful in your estimations. It gives you the cost per thousand (1000)
calls to that url.

I work on apps that vary from free to around $1000 per day. Trafic
varies from several hundred to over 100 million request per day. It
would be impossible to make any comparisons at all between those apps.

Robert

[Albert Kam]

Hi again Robert.

Great app you have with 100 million requests per day !

Thanks for for sharing this.

Regards,
Albert Kam