Having the listings show up in order makes it easier for the buyer to find if I have the issue he/she needs. When they list as poorly as MrP did them this time it's a miracle they combine on anything! Tom's suggestion about spacing them out may have helped BUT even when spacing the listings out a minute doesn't matter. Supposedly "ebay's server can't handle the input" so they're going to get out of order no matter what you do. I could list spiderman 1-400 in order with 1 minute between and I'd be lucky if any two ended up next to each other!