It has more to do with the type of shop software that has been used to create it in the first place.
I would think a decent website shop should be able to apply a price increase right across the store, or at least within product groups. They can do sales discounts etc, so ide imagine they can increase a price by a percentage too!
However, as I say, the software dictates this. If you look at how a "paypal" button works. (not paypal shop)
The button contains the product name and price etc within the code. the button is then placed on any sort of web page, when clicked it takes you to a paypal payment.
These buttons are used strictly for shops or sites with limited amount of products to sell. so its not a big deal to update each. but if you have lots of products in a store, then this type of setup would not be the option to go for from the off!
i have never used GoDaddy for anything, so i do not know if this is a typical of shop software of theirs within their packages but i cannot see why in this day it would not have a full eCommerce solution options.
To be honest, I would have thought your web guy would have brought this top your attention before even starting the shop. he should have advised you on available eCommerce options if he could see you have a vast list of products options.
UPDATE
Had a quick look… these videos may help you. Seem like pretty dynamic stores. That doesn’t mean im right though…
personally, I would just call GoDaddy support or email them from your sites admin panel and ask the question?
$this->BBvideo_pass(‘$8’, ‘$4’, ‘$7’)
$this->BBvideo_pass(‘$8’, ‘$4’, ‘$7’)