You've basically got two choices:
1.) Campaign to change the laws.  Now I don't think you'll get very
far changing copyrights to allow you to pirate and try out recently
released games -- nor should you be able to, but there are places I
think we'd agree the laws aren't proper.  Let's take, for instance, 25
year-old Atari 2600 games.  There's no reason for copyrights on those
suckers to last so danged long.  Now that's not an excuse for me to
start downloading them left and right, but is a pretty good point to
bring up to respective legislatures.  Though I do think there is quite
a bit of gaming piracy for platforms like the 2600 where nobody's
really being hurt – and think the law should reflect that – I'm pretty
confident you're not arguing that at all.

2.)     Be more conscious in your call for civil disobedience.  If you
truly feel, "if consumers are given choices as to which products they
want to buy, they must be able to sample those products before they
spend money on them," and that this belief, in your estimation,
warrants doing something illegal, say so.

Unfortunately what you're arguing for is a very simple reduction of
peoples' rights to copyright.  You're removing value from products.
There is a certain value for gaming houses to release games you'll
risk full-price on to try without testing first so that you can have
the game NOW.  Have gaming companies ever cashed in on sequels,
banking people will buy substandard games?  Absolutely.  Made shiny
packaging and slapped a popular license on top of a game so that you'd
think it's the best since sliced bread, but put very little into the
game inside?  Of course.  People do reward such chicanery with their
dollars, and companies in all sorts of fields exploit this.  It's
their right, I'm afraid.

Don't like the price of a game?  Not sure if the game is good enough
for you to snap it up?  Don't have a local store that rents games?
You've still got alternatives other than breaking the law.  Try
trading time for dollars.  Wait and eBay the game later for what
you'll willing to risk -- and recoup your losses if it sucks selling
to the next schmoe.  Nobody says you have to buy now.  Your "try
before you buy so that you can predetermine your price" takes an end
run around capitalism which, for better and quite often worse, is the
prevailing –ism around these here parts.

And as you don't even have a dog in the fight (not owning a GBA), I
find it strange that you'd urge people to do something illegal with
theirs.

Anyhow, your post, though possibly well-intentioned, does read, "Break
the law if you see fit."  I'm not being snide when I say, "Don't
rewrite the law to match your own beliefs [without understanding the
consequences]."  If we could all do as we personally saw fit b/c we're
able to justify our own actions *to ourselves*, well, there wouldn't
be much to society worth bragging about, would there?  It's no wonder
even Kant believed that you had to have at least a "God-like" presence
held by the population at large for laws to work -- even if you
weren't caught breaking the law and "betraying soceity", you'd get
what's coming to you in the afterlife.  Instead, in a godless society,
the ease with which we can break a relatively honest and fair law and
not get caught has started to equal a real moral dilemma where we're
not even sure we're doing something wrong.

As a quick aside, it's a shame there isn't a more robust GPL'd game
market where games can't help but be "Free".  This would provide both
competition to commercial gaming and a legitimate outlet for people
who are dying to game but don't have the money or other resource
required to enter the commerical market.  Sorta a furthurnet.com
(legal p2p music sharing service) for games.

That better?  ;^)

Ruffin Bailey