ISO Maxspect gyre XF250 pump only

[SallyWho]

My XF250 has developed an unrelenting whine despite multiple cleanings, and it's driving the whole household mad. However, since the 250 is a retired model it's next to impossible to find just the pump without having to buy a controller, too. And naturally they couldn't make the 350 backwards compatible with the 250 controller. So does anyone have the XF250 pump only that they're willing to sell? Thanks!