Thanks to everyone for your advice ! I will meet the seller tonight to buy it ,and now i have to find some film, developing tank and so on. Thanks again for all your advice.
Jim
Film is easy to find - Calumet has a good selection. Also Freestyle.
You don't have to use a tank to process 4x5 film. Many people start out using open trays (in total darkness, of course). I use a "slosher" - a plastic cradle that fits into an 11x14 tray and holds six sheets of film, each in its own compartment. Sloshers have the advantage of keeping the individual sheets separate during processing. One of the criticisms of open trays is that the shuffle method causes the sheets to contact each other and can (often will) lead to scratching - a slosher eliminates that risk. Can be purchased new, but I made mine. There are threads both here and on LF Forum discussing sloshers.
Other people swear by Jobo tanks for processing film. And there are those who suggest using Unicolor printing drums and rollers.
Lots of options - you will get lots of advice whether you want it or not!