ebay postage calculator

[Theo]

Can anyone recommend a postage calculator for listing things on ebay?
What I would like is something that:

1. Covers all the major couriers (Royal Mail, Hermes, DPD, DHL, UPS etc)
2. Allows me to input a weight of the item
3. Doesn't insist on postcodes (I won't know those until I sell, but assume
UK mainland)
4. Allows me to filter by collection, dropoff, shop-to-shop etc (I'm only
really interested in collection, but couriers like Hermes don't display that
until several steps in)
5. Shows me the maximum sizes of each band, rather than asking me to enter
the size initially. I won't know the size until I've packaged it up, but I
would much rather know the maximum thickness is 16cm so I can try and
package it to fit inside the limit, instead of finding that out later.
6. Allows me to adjust the quote based on adding an insurance value (rather
than putting in the insurance value at the beginning)

I don't really care about buying through it (at listing time I'm not ready
to buy), so maybe there's an Excel sheet or something that will do it. I
know there are things like Packlink but they fail at several of the above.

Currently calculating postage is the most tedious part of ebay listing and I
wonder if there's any options to make it less annoying.

(I suppose I could write something like this, if the tariffs were all
published. Much easier if somebody else kept it up to date though)

Thanks
Theo

[Raj Kundra]

LMAO