The one price I've seen quoted for a GeForce 2MX-based display adapter is from Guillemot.
They've announced that they'll be releasing their first GF2MX card (appropriately called the 3D Prophet 2MX, I think) in the single-headed configuration on July 10th for $149 list, and the dual-headed model "later next month" for $179.
Because of that, and because I'm no great fan of Guillemot, I chose to purchase the VisionTek GeForce 256 SDR card myself. At $121, it's a steal.
BTW, Compuplus has a couple of other good deals going -- I also ordered a Maxtor DiamondMax VL30 30.7GB 5400rpm UDMA66 HDD for $124. Even if it's only got a 512k buffer (I think it's a full 2mb), it's still a pretty warm deal.
Oh, they've also got the ELSA Erazor X -- a GeForce 256 SDR card -- in retail box for $139.
Last comment -- their shipping/handling costs have dropped drastically since I'd last dealt with them -- shipping on one item via Airborne Express/Fedex is a not-too-unreasonable $11, and shipping on both of the items in my order was $18.95.
[edit] Sure, the GeForce256 SDR is performance-constrained by its limited memory bandwidth. However, considering that I've got a plain old Viper V770 (not an Ultra) in my Athlon-700 based system, even a GeForce256 SDR is a HUGE improvement over my current plight.
(Besides, I just bought the wifey a Compaq notebook PC, extra SODIMM memory for it, *and* a Mavica digital camera. I can't afford to spend much on myself...heh.) [/edit]