Can't see if that tower is 1 or 2 faucet?
Either way... a one tap chrome tower is $69 on ebay. A regulator can be had for about $40. Drip trays for about $20. So you'd be saving $40-$50 - but buying used stuff, that could potentially be nasty. If it were me, I'd skip the drip tray for now, and check out Todd at kegconnection.com, see what he could do for me, and spend the extra cash for peace of mind?