What's the real scoop on propane tank re-certification?

By me in nj they wanted like 80 bucks for recertification. They do a pressure test. And thats for 5 years, not worth it. They did take my almost new looking tank and for 10 extra dollers gave me one that was beat to hell and would be food for the 5 years. So, depends on the place and if you can find one. To me it looks like they just look it over and slap a date sticker on it. And they probably do it that way. If you can get it dont for any of the above prices I would do it.