Nearest DA40 to Scotland I have seen were at Gamston. You would probably have to do a very high number of hours in a short time to make it economically viable for the owner. I would guess you may pay more than a normal rental cost. £180-£210 PH wet (plus hangarage if it was at your local field).
You could lease or rent a PA38/C152/C172 at Glasgow, Cumbernauld or Perth for a fraction of that. Look up Leading Edge/ACS, Border or Cloud Global and ask about hour building deals.