i had my other tranny dropped off to get worked on, but ive been postponing it due to funds, i just had to pay school $400 so i can register for fall

anyhow, inspyral is selling his ex tranny for $200 plus shipping. it has low miles, assuming he said it doesnt grind that it doesnt grind. so, should i just buy it off of him or should i spend the $70 and have the guy LOOK to see if anything is wrong and if there is replace it, $150 for labor plus parts, which can cost up to $400+(which the tranny will have 0 miles). i need a tranny pretty bad...it will go in asap, when i get the new clutch. and then sell both trannies for cheap?