Buying multiple copies of a game on Steam - WHY ISN'T THIS POSSIBLE?

Seconded, wanted to do a giveaway of multiple copies of Super Meat Boy and its soundtrack a few weeks ago, but I had to buy them all individually which was a bit of an annoyance. Even without the conversion fee problem you're having, it seems like something that should be available.

just do the following:

if you want 5x4€ games for example it would cost 22€ incl transfer costs, right?
then don't buy them as that, but buy 20€ steam wallet(+0,5€ transfer costs) and you have the same

just 1,50€ cheaper

upon reading this It got me wondering. There's seems to be ~2.3% tax on all my steam purchases. even though the currency rate when I made that purchase is 1 USD = 0.9921 CAD

Steam conversion rate/tax? is higher than paypal?

It does for some games;
"Buy Borderlands 2 - 4-Pack
Includes four copies of Borderlands 2 - Send the extra copies to your friends"
It's not a platform for a wholesale game market.