From somebody who lost 100k by spending before having clients, my advice to you is: invest the least possible moneywise, try to sell, finetune your offering, try to sell, reloop ;)
A successful strategy I found is to start with prices that are slightly below the market average, do an excellent job, gather reviews and only then increase your prices. Deliver results that are higher than the price you are asking, gather reviews, increase your prices, reloop.