All time low price for the Valve Steam Deck. Part of eBay Plus Tuesday, eBay Plus required.
Price increased to $679.20 $684.79 after coupon applied
Valve Steam Deck - OOS. Marked as Expired ages ago in title due to price increase
Also available: Panasonic Deep Bass Wireless Headphones RB-M500 - Black - $71.20
XCOM has pretty good native controller support from what I remember so even without the touchpads it should be viable. I don't have an issue with the touchpads but I've had the Steam Controller for years so I'm used to them.