The ONLY place in TO that'll put in an 8GB RAM int...

The ONLY place in TO that'll put in an 8GB RAM into a non-vintage Mac (where 'vintage" means 6+ yrs old). Even the Apple store won't do this for you anymore, though it's their flawed design that created the issues. If you want to run High Sierra and use Chrome, you need more than the 4GB RAM Apple ridiculously includes in many of their laptops. You need 8GB.

It cost $100 to get the 4 traded for 8 and finally, my MacBook Pro works. we all know Apple are crooks, but these guys were great. Fantastic customer service too.