You may be aware of this, but Adobe’s Creative Cloud is $50/month for as long as you want it and you’ll always get access to the latest versions of Photoshop without upgrade costs. If you’re using any amount of Adobe software, it may be a worthwhile investment. You may even get a $30/month for a year promotional offer like I did.
50$/month = 600$ a year.
Photoshop retail is 725$ but can be good for at least 3 years so 725$ / 3 years = 240$/Year.
So 3 year of retail = 725$ vs 3 years of Cloud = 1800$.