I'm a poor college student looking to save money on shaving by doing SR shaving. I bought this razor: Amazon.com: Parker SR1 Stainless Steel Straight Edge Razor and 5 Shark Super Stainless blades: Health & Personal Care

From everything I'm reading on here, I hear no mention of razors with replaceable blades. Should I look for a new razor? If not, should I get a strop? I really can't spend more than 50 dollars on a razor right now. If anyone can recommend anything, I'd be eternally grateful.