Not at all, in fact I intentionally designed these solutions in spreadsheets since they are actually packed with tons of benefits. For one they have no monthly fee to operate and since many people are very comfortable with spreadsheets it's easy to customize them to your needs. I see them as an affordable way to get your solution off the ground!
You could always copy my exact templates if you wanted to but they actually take at least a few hours each to develop if you know exactly what to do and how to do it, I've priced it to reflect that amount of time and not the hours you'll save by using it!
Well since they are done in spreadsheets you're able to edit them yourself; or if you didn't want to deal with it I'd be more than happy to make whatever changes you need for you at an hourly rate.
I've built lots of solutions for startups in the past, happy to tackle any of your busines needs! Just contact me for more informaiton and you'll be all set!