Size/Quantity Button on the Product Page instead of the standard Dropdown

Site URL: https://www.erheer.com/shop/sunkissed

Hi Squarespace Wizards,

I am setting up my e-comm store and some of the lovely developers have been helping me out with customising it. I am so glad we have such a supportive community. I have a customisation which I'd like to implement.

I got my Website reviewed by shoppers and one of the things that popped up again and again was they were not liking the quantity dropdown on my shoe store. All of them suggested that it is better to have a button like format for size and as long as the quantity is available, Add to cart Button is active, when there is just 1 stock left, it says Low Stock and when the stock is not there, the button text changes to Notify Me. 

Please let me know if someone has successfully implemented this format and how it can be done or if there is a thread with a solution that I missed looking at. 

The first two screenshots is how I'd like to have and third one is how it is on my website currently. 

https://www.erheer.com/shop/sunkissed

Password is july@2020

Thanks.

Hey guys, Didn't mean to bother you but just wanted to see if you know how I might be able to implement this.

Thanks for taking a look!

@tuanphan @rwp

Hey guys! any guidance would be highly appreciate.  

Hi. Sorry for the late reply. You can use this plugin.

Hi @tuanphan  

I don't have any colour variants for my product, can I use this plugin just for the size option selector?