Problem is, for the most part, you can provide higher quality transfers (in terms of menu aesthetics and navigation) using a PC-based DVD authoring application. The simple spreadsheet-type menus associated with the standalone DVD recorders smack of amateur hour, so if you are going head-to-head with someone who has a decent PC-based disk authoring setup, most clients would opt for the better looking menus, etc. because it looks more professionally done. You could probably make a few bucks at it, but the other mitigating factor is the relative high availability now of inexpensive standalone DVD recorders as a consumer item. Standalone recorders are making a serious transition from being an early adopter/enthusiast/prosumer curiosity component to a standard part of a high-end home theater setup. However, PC-based media center HTPC's are also making a run at this sector as well.
Vic