Okay, my first successful transaction with MPB completed.
My strategy of selling my gear worked out very nicely:
1) get the current market value of the items, including MPB quotes
2) since MPB quotes are generally lower than the going rates
3) advertise them in local Craigslist or something similar at higher price than the MPB quotes
4) what doesn't get sold locally, ship off to MPB
This is how I have four lenses off my hands in the past month: three sold via local Craigslist at higher prices than MPB quotes, and the one that wasn't moving, I shipped it off to MPB. The lone lens that wasn't moving, EF 70-200 f/2.8 v.1, was just evaluated, accepted, given $25 more (I think they slightly low ball the quote and give higher, if the condition is as good as you stated, price at the end to make you feel good about the transaction), and processed the final phase of the transaction via bank routing.
Just about the only "hassle" of selling through Craigslist was having to take photos of the items. Once someone wants to buy them, it's just meeting the buyer in a public location and collecting the cash. The "hassle" of selling to MPB is having to wrap everything in a suitable box with cushioning material and driving to a FedEx collecting place. I'll call that just about equal hassle, either way. I suppose the only advantage with the MPB route is that it can be quicker than via Craigslist if the items take longer to sell, but I'm not desperate for quick money, anyway, so going first through Craigslist for more money than the MPB quotes worked out very nicely.