I'm a local DJ and I used to quote often on Thumbtack. I would perhaps book 1 out of every 12 events I quoted - which was okay. There are many HUGE DJ companies around my area that no doubt would quote on everything.
Now, Thumbtack have introduced a new pricing structure and basically now it costs about 7 credits to quote on any events where the price is $500 or more. It's literally costing a fortune to quote on jobs now and I've stopped quoting completely. It's a shame because I think Thumbtack had the right idea when they started out, but just go too greedy.