Our son spent his first two pro seasons living with host families. The first one in Salem, Oregon charged $200 a month, which included all meals while he was "home" and transportation to and from the ballpark every night. His host Mom even made him a sack lunch every day in case he didn't like the food at the clubhouse. His second home in San Jose, CA didn't charge him anything, provided all his meals, and gave him a truck to use. The host Mom even did his laundry. He was spoiled!
During his 3rd and 4th seasons in Norwich, CT he shared an apt. with other players for about $300 a month each and ate meals out most of the time. On rare occasions they would cook out.
As far as I know, the salary is the same for all minor leaguers and increases slightly each year and each level. He did get a 3rd round bonus when he first signed, which he invested and has dipped into for professional training during the off season, shipping his truck, and other "things." I think he figured out that he earned about $15,000 last year and spent about $5000 out of his bonus...not including an engagement ring. He lived at home during the off season, where meals and rent were free ... but he did have to take out the trash and do his own laundry.