I dealt with something similar when I was a programmer. We had inherited a PDF publishing module written in 3B2 from the late 90s. (Google that language and you

I dealt with something similar when I was a programmer. We had inherited a PDF publishing module written in 3B2 from the late 90s. (Google that language and you won't find much. Wiki article here: https://en.wikipedia.org/wiki/Arbortext_Advanced_Print_Publisher https://en.wikipedia.org/wiki/Arbortext_Advanced_Print_Publi...) The most I've personally seen a contract was for hiring a consultant to help fix bugs in this 3B2 language that nobody knew. The cost for bug fixing and onsite training was $5000 CDN, per day. That was back in 2010. The day was 7.5 hours so this guy's rate was $666/hour (Now that I look back, maybe that rate was an inside joke or something). We ended up hiring him for 5 days ($25K contract) as that was all that was needed to keep this module going, and we crammed a bunch of programmers in a room with him to see if we could learn a thing or 2 - the end result was negative. Nobody could learn it because we just didn't want to touch it. It took another 5 more years to kill off that module and move to an open source solution. Now before anyone does any straight math do see how much this consultant made per year, you have to understand that work was very limited, and eventually, everybody wanted this language and publishing software to die off.