Team Tamarack Mountain Bike Racing World Resouces

Is this a reasonable price for a bike?

I found online a bike for sale (mountain bike 18 inch) and it es in great condition and shape and only $50. Should I buy it?

Without knowing more (make,model,year), any recommendation would be a guess. Like any other type of bike, prices for mountain bikes cover a huge range, from under $100 to thousands of dollars. If it was a $100 bike it is no bargain no matter how good the condition

Bestselling Pacific Exploit Men’s Mountain Bike (26-Inch Wheels)