The scraper isn't built for that... It's built to import everything, with tags, stores, quantities and all. Barter's export feature is a mess, it's a text-based export that doesn't clearly/cleanly separate game names from other elements. There's a reason I wrote a HTML scraper rather than an import tool, other than the convenience of a single-click import.
If you want a real alternative-- either (1) convince the Barter admin that banning Lestrade's is only making HIM look bad (because he's making it look like he's trying to prevent Lestrade's from working properly, and as there is no way he can prevent LT from importing user data, he's just making it more of a hassle for *users*), (2) or convince your friends to maintain their lists at LT's primarily, they'll soon appreciate how easier it is here. If the IP isn't unbanned by tomorrow, I'll definitively close the importer and will instead allow users to upload a HTML file of their lists for LT to analyze. Which, again, will be the admin's fault. (Uh, 'the admin'... I'm still wondering why he's more secretive than a torrent site admin.)