Can I completely delete all Pricing Attributes at once?

Hello,

I currently have 62 products on my website. They each share the same 14 pricing attributes. Each item that I sell has 14 different pricing options (based on quantity). But now I am changing to selling my products only virtually (digital download) so I will now only need ONE price option for each product.

Right now the only way that I know how to remove the extra pricing options is to go to "Attributes Controller" and hit delete on every single pricing option under every single product. Is there a better way to do this? Is there a way to delete all of the pricing attributes for every product all at once?

I tried to delete the options under "Options Value Manager" but got this message: This option has products and values linked to it - it is not safe to delete it.

Any advice would be SO MUCH appreciated!! If deleting one by one is my only option, then I'll do that - but was hoping for a faster way! :D

Thank you for your time
Denise