I've made about $900 USD from mentioning Shopify in some of my blog posts, and it's definitely a solid affiliate program.

You get 2 months worth of someone's subscription if they signup, so $58USD from one person if they go for the basic plan. Since Shopify offers free trials they do a great job at downstream conversion and getting people to signup.

I think the real money is either in Shopify Plus referrals (you get $2,000 according to https://help.shopify.com/en/partners/how-to-earn#affiliate-referrals) or in becoming a Shopify Partner.

Shopify Partners get a recurring 10-20% of someone's membership fee. I don't know what the difference is in becoming an affiliate versus a partner, but now that I'm reading their terms again I want to find out lol.

But yeah, TLDR: I make $50 a month ish just by peppering Shopify links in some old blog posts. Definitely one of the higher converting affiliate programs in my opinion.

EDIT: here are the stats if you're curious https://imgur.com/nHDnGA8

I am a big fan of promoting software as an affiliate marketer. AliDropship is an awesome piece of software that has helped tons of people create successful dropshipping businesses.
They also have a generous affiliate program that makes it more worth the time and effort of promoting.
I do recommend creating a niche website to promote the plugin. Niche websites are how I earn a consistent income online.
They literally are the best way to make money online while you are sleeping, shopping, or spending time with loved ones.

Great network, been working with these guys for years. Good variety of dating offers, good payouts, timely payments. New tracking system is a plus. Dean and his team are great to work with. Highly recommend.

After the latest Friendfinder issues (check on Yahoo News), what I've done is switch most of my traffic to C-Date and Erovie:
https://affiliates.insparx.com/affiliate_signup.aspx . So far, so good. In particular with Erovie which aims at the same target groups of Friend Finder so I didn't have to change a lot in my targeting so far.

AFF is run or at least co-run by Penthouse. The management there are pretty legitimate. They also run AVN, so there's a lot of good business people. No scammers.

I made about $800 in the last 30 days with percentage. System already auto-approved the payment a few days ago and it should be sent soon. Talk to your rep if your earnings are low. He can advise you on how to increase earnings.