No. The Bulk Lister has a highlighted Platform choice:

• eBay, listed directly through your connected eBay account (fixed price or auction, with Best Offer if you want it).
• Slabs & Singles, a card-only marketplace run by the makers of FireCardManager, listed directly.
• eBay and Slabs & Singles together in one run.
• Shopify and Whatnot as CSV files in each platform’s bulk-upload format. Photos for these come from your own image host.

Lots can be listed on eBay, Slabs & Singles or both from the Lots page. The Live Listings page shows everything live on eBay and Slabs & Singles in one place, and the Sold Log shows which platform each card sold on.