I am heading into my second year offering fertilizing/Weed-control. Looking to buy at least a 200Gal skid sprayer. There is one on CL it's 180gal but i'm waiting to hear back whether it's still for sale. The one's ive seen on CL are going for around $1,500-$2,000. Also, any tips or things i should look out for when buying used? I've never used a skid sprayer so I need to learn everything i can about them. Thanks a bunch.