If you aren't able to find someone willing to do a trade, I'd recommend going the EBAY route to sell your items, then purchase a Pronto with the earnings!
MX-3000, MX-950, MX-900, MX-850, MRF-300, MRF-250 - Call or Email for THE BEST PRICE! [Link: BlueDo.com] or call (303) 873-1750