I understand your valuation but I cannot justify the risk/recoup time.
Are you willing to come down if I order two?
Seriously? 20 LTC each for these is a great price. Run them for 3 months and you'll have that back, plus breaking even on electricity at $0.15/kwh. If I had circuit capacity for another 10 cards, I'd buy them all in a heartbeat. Good luck OP.