SlabSquatch's Substack mostly covers Pre-order, Refunds and Topps. Based on 2 issues we scanned in the last 6 months, these 3 newsletters cover the most similar ground. The closest match is Mantel, which also writes about Topps.
Ranked by topic overlap: newsletters score higher when they share distinctive topics, not just broad ones everyone covers.
Newsletters for Collectors - Above the Mantel & Mantel's Mail Day
Up-to-the-minute collectibles news for passionate collectors
Track topics across 1,000+ newsletters and get alerts when they surge. Free to start.
Sign up free