Then it's an issue of overabundance of Pc. If that gets more controlled, then people won't buy out everything rare from Usershops if a global usershop search existed. I remember in April 500 Pc was considered a high price, and only a handful of users had a lot of pc and would bid 1000pc just because they could (those were actually random acts of kindness! Bid on Auctions held by users who didn't have some badges, so a high bidder would do this to gift a badge). Now it all increased ten-fold, 200pc is high for newbies but very low for established accounts, that's why the wealth of accounts became so uneven in power and so noticable and detrimental to newbie progress. Some newbies won't wait 3 months until they can send 7 pets out at a time and each would bring back a lot of pc/things to be hoard sold (eggs, etc).

It's an issue of inflation then, and if that gets stabilized then maybe searching Usershops could be possible in the future? Edit.: or the auction house would become less of a hassle.