I really couldn't
Lowest Ebay BIN's for the cards. After totaling it up, I'm not even sure I could do that many primes with these. You're already coming out ahead without a single prime in the trade.
Floatzel Gl Lv.x $8
Darkrai Lv.x $6
Shiftry ex CG $5
Kingdra Delta ex $5
Shiftry PK ex...