CS6 is available for $600 for Standard or $1000 for Extended:
I believe the cheapest PS-CC deal would be the PS-CC+Lightroom for $10/month for an annual subscription:
https://creative.adobe.com/plans/photography
Doing the math, you could pay $1000 for an old PS CS6 Extended, or you could pay $10/month for the new PS-CC (Extended is the only version), where $1000 @ $10/month = 100 months or 8 years.