Ask HN: Visual FoxPro for charity POS app?

I need some technical advice for a pro bono legal project. I'm helping a local charity, staffed almost entirely by volunteers, to negotiate a software development contract with an independent developer. The project is to build a point-of-sale and inventory-management system, to replace the antiquated custom-build system they have now. (The charity's management has already explored off-the-shelf and FOSS possibilities, after another developer's prior attempt to build a new system ended badly.) The developers are proposing to use Visual FoxPro 9.0. I'm vaguely familiar with that platform, and have just read the Wikipedia entry and the Microsoft landing page. YES-OR-NO QUESTION: Granting that there might be better tools than Visual FoxPro 9.0, is that at least a not-unreasonable choice? Thanks in advance.