I guessed 30-50, probably closer to the high end. I kind of fell out of modeling around high school (84-86), got back in briefly during the 91 gulf war (built an Abrams, Bradley and an armored 4x4 Porsche 911 armed with a Vulcan
), then again fell out of the hobby until the late 1990's when I bought a few 1/72 scale armored vehicles and a 1/25 scale F-350 whch I started building into the fire engine I was a Captain on, then agian fell out of building until last summer when I bought a 1/35 Cromwell, thats when I discovered the impact the internet had on modelling, I've been hooked since, I built some armor in group builds over at Armorama.com, then I started at a new department and one of the guys was into building fire apparatus, that inspired me to pull that Ford F-350 out of the closet and finish it, at about the same time I found an emergency vehicles group build going on over at scale auto, as a result I started scratch building more fire apparatus resulting in the purchase of many automotive models, then most recently I got hooked on building air tankers (for the emergency vehicles build here) and went wild probably buying 6-8 kits just the past month. I don't think I will continue to buy at that rate but I was making up for lost time (now I need to find that time to get them all built).