If you've got the money, definitely use quality protein and creatine supplements because with good supplements you can achieve results in 19 months that takes someone not using supplements about 20 months to accomplish the same results! That saves you a full month of workouts over the course of about 2 years of working out, which is great.
Cost-wise, however, it may not be great: $50/month x 20 months is about a thousand dollars. So if a thousand dollars is worth reducing that month, then go for it.
Also, be VERY careful and do you research on quality supplements whereby ALL ingredients within them are made here in the USA or in northern European countries only. To save money, many import whey and other amino acid compounds from China or worse, and if you're been reading the news you know about all the deaths and disfigurements caused by China's milk thinning programs. So be careful.
You may want to consider actually heating healthily rather than using supplements, such as eating actual eggs (e.g., omega-3 brown eggs), drinking actual milk, eating yogurt, fresh vegetables, fresh fruits, grilled salmon or other fishes, etc.