Should i buy a new oven or keep the used one?

[Juan Rosado]

One of my tenants offered to sell me their oven for $150. Its in good conditions, a little dirty but I think it could get the job done. I dont know if I should buy it because I want to increase the price on that property and I feel that a new range would be better for rent increase, or keep the old one and save some money. What should I do?