I would go with POST with a body in that case, where I interpret is as a "new search item" and use GET to scan through results, if there are many results availa

I would go with POST with a body in that case, where I interpret is as a "new search item" and use GET to scan through results, if there are many results available. I don't think I've needed something like this more than once or twice though. From users perspective, asking information on specific 50 items at once is not something commonly done.