The two reasons why I oppose buying art for real cash:
1. Pricing is pretty high for one sketch. I mean, $5 for a drawing exclusive to TBT. A McDonald's large drink has more value than that, and you can get one for a dollar alone (unfortunately, you have to pay the tax too).
2. I don't believe in trading real world currency over virtual items when I can use real money for anything. Virtual items have no value in real life, and it's not worth spending money for nothing (donating to charity is worth a lot, so that's one thing).
There was a really good artist that charges cash, but there is a reason. She doesn't like collectibles, so there's no reason to use TBT bells. In my opinion, it's better off to hoard TBT than to charge real money for site-exclusive stuff (except for real world items since they have real worth).
$5 is actually rlly inexpensive, i usually charge $8-$10 for my art, but thats just me :/
btw i never opened a shop here/requested a commission from anyone here so i wouldnt know the rate hehe