I've bought a couple of basses and other bits from BD in the past. Been watching this thread, and debating whether to share my tale or not.
Wanted to sell a bass last year, and arranged a commission sale through the shop. Told I could get it back at any time, just pay the return postage. Fine.
I left it in the shop for quite some time - it was priced too high IMHO - and wasn't shifting. Asked about getting it back, but was reassured enough to leave it for longer, which I did.
Anyway, more time goes on, and I spoke to Mark about reducing the price, which he never did after I asked him to.
Upshot was, I eventually rang the shop and asked for the bass to be returned. Chap I spoke to was great, no problem, and we began to arrange details.
However, with the chap in mid-flow, Mark grabs the phone and begins to give me a rather angry telling off for wanting my bass back! How I was wrong, unethical, etc. This was after no interest, and a reluctance/refusal to reduce the price.
Even his employee seemed a bit shocked. After what I've read here, I wasn't too surprised - but sadly, after previous successful purchases, it left a rather sour taste - and I would now shop elsewhere.