I built a website to help you bundle shipping and save money on eBay
The basic idea is that eBay doesn't have a great way to search for multiple issues and find them from the same sellers, so too often you're left either paying $8 shipping each on a few separate $2 books, or spending a ton of time digging through each seller's inventory to try and find one you can bundle shipping with.
So I built an app that would do it for me. Originally I just fed it a spreadsheet with a list of what I was looking for and it would spit out a new spreadsheet with a list of sellers sorted by how many of my want list they had. It worked well enough so I decided to turn it into a website for others to use.
Basically you just type in what you're looking for, click the button, and it will generate a list of sellers, ranked by how many issues they have, with all of their listings for each item, the price and shipping for each item, and a link to the listing. Some sellers have different shipping policies so you still have to confirm they'll combine shipping for you, but this should at least help you avoid paying shipping on each individual book you're looking for.
https://www.comicbundlefinder.com/
New features worth mentioning:
- File upload: If you use League of Comic Geeks or CLZ to manage your collection, you can now upload your exported want list to save you typing or copy/pasting everything. You can also just upload a basic .txt/csv/xlsx file with one issue per line. This is done client-side so no privacy concerns.
- Gap analyzer: Similar to the above, you can upload your exported collection list (or a basic .txt/csv/xlsx file) and the site will generate a search list based on what you're missing. It only works between two issues, so if you've got the first hundred issues of ASM, it won't go looking for the rest of them, but it will help you fill any random gaps you have. This is also done client-side so no privacy concerns.
- Single-issue searching: Some folks wanted to be able to find multiple copies of a single issue. This is now possible, provided the seller has separate listings for each copy (some sellers use one listing with a quantity dropdown menu, I'm working on getting the search to find this correctly).
- Save and email results: Found a great set of listings? You can now save your results as a shareable link or email them directly to yourself (your email is only used for this purpose).
- Series pages: Just starting out collecting and don't have a want list yet (or your want list is just "everything")? I've created dedicated pages for Amazing Spider-Man Vol. 1, X-Men Vol. 1, and Daredevil Vol. 1, containing all issues of each series, broken into batches. Results are refreshed daily.