>>76413899 (OP)Inzer is the gold standard. However I like Pioneer lever that is an on the fly adjustable plug-in to standard lever belts, and also their regular training belts with the zigzag hole pattern.
13 mm is an overkill, investing in a good 10 mm lever belt is a good idea if you aare semi serious with your lifting. I guess you can source some second hand belt from ebay or even cheap chink stuff from Amazon even, the quality of the lever is what makes or breaks one however. Avoid double prongs at all costs, if you think you'll be smart and save money by buying a single prong you will find yourself hunting for a lever belt in short notice.
You may also need a less meaty training belt, for which I would recommend the Pioneer.
I'd avoid the tapering designs, go for a four inch wide model if you are an adult male