One of the best pieces of advice I got when I started my first business (A PC Repair business) was to use the term inexpensive instead of cheap for this reason.
Budget friendly, low cost, entry level. All great alternatives to the word “cheap”.
Personally not a big fan of "entry level" esp when you are offering a service, comes with the feeling of inexperienced imo. The other 2 on the other hand, yeah, they seem fine to me.