My budget it $15K. As usual prefer to spend less but will spend more if needed. Finding E36 ranging from $5k with 235k miles to $16K with 68K miles. In a certain way I am asking an unanswerable question. What one in the end will cost me the least? Purchase price plus cost of needed repairs. Is it wiser to spend more on a car with less than 100K miles and will need little repairs. Or go up in mileage say 150K or so, pay less but put $3-5k into repairs?