Trust me, once you buy one S/L edition, you'll get hooked on them and want to buy more. The bank account won't matter
The Artists Editions are nice books, but I think others will agree that there are few books out there that should be considered "investments." Buy the books because you enjoy collecting them.
And the deal from Grant for the Black House/Talisman and the AE of DT7 can be found here - https://secure.grantbooks.com/z-sk-dt-7.html