The simple rule of thumb is that the home should be about 3 times your salary. But that is meaningless.
You think you don't know how much your mortgage should be, but that is exactly what you need to know, because the price of the house is not what matters; what matters is your monthly payment.
The monthly payment will vary based on how much cash you put as a down payment (so therefore the mortgage amount), your interest rate, the property taxes, the insurance, whether or not you have PMI (if less than 20% down payment), any HOA association dues or any other monthly expenses associated with the particular home you buy.
I hope we enlightened you a little.
Summary: Cost of house - irrelevant
Monthly cost compared to income - this is what you need to know.
Mortgage approval is based on income, credit score, credit history, other liabilities, cash on hand, other assets, job history and job stability.