New fine editions of Gothic Literature

I think it depends on your definition of a fine edition. There are small presses that produce volumes on a level with, or rather better than, mass-market hardbacks without approaching the dizzy heights of a "fine press". You might want to look at Tartarus Press, Swan River Press, Egaeus Press, Zagava Press (although the bulk of their output is late 19th, 20th and modern Weird/Horror/Fantasy). Actually, Zagava do offer (like Suntup) editions of their books at different tiers as regards materials, quality, etc.

Black Letter Press, which is primarily a publisher of occult books, has an edition of Polidori's The Vampyre currently available.