Locksmith

Darn Locksmith for being too good! Due to Shopify''s fee structure on sales, I subscribed to a higher plan than I probably needed. Which meant that I was placed into a higher tier than I'd hoped for Locksmith. The dilemma is, I couldn't bring myself to reach out to ask for a lower price due to how well their plug-in works!
You see, I offer custom products that I only want people to be able to add to their carts (since I despise invoicing as I also have an expansive catalog) AFTER I send them back a proof of what I'd be making for them. Locksmith gives me the peace of mind of protecting my custom products from ordering ahead of a request which is invaluable. It also works with Shopify's app which of all the plug-ins I've had to subscribe to, is the only one.
Alls this to say, if you need to restrict products, I HIGHLY recommend Locksmith as it's been invaluable to my sanity and business model!