I would wait a few years for the price to drop. If they're good the price will come down quickly since muscari usually multiply like weeds!
Just guessing, but I bet they will be more like the white ones, smaller flowered and less showy than the blues, but still a nice contrast.

Thanks for answering. I decided to take a chance on them and ordered 2 sets of them. I have a shady walkway and think clumps of them would brighten it up more than the blue ones, though I intend to plant some of those also.