Setting up inside even a similar-but-not-the-same environment is horrible. My experience: dependent packages the need to be compiled on their environment, und

Setting up inside even a similar-but-not-the-same environment is horrible. My experience: dependent packages the need to be compiled on their environment, undocumented network lags form internal servers/services, lack of sysadmin competency. Perhaps an option, to keep this as a SaaS, is to offer a DNS mapping to your own server (give them access to, if they need root/admin access, seems so), but it is your environment set up as you need. Pricing: Depends on what you're doing. Jumping from $9 to $10000s which is what this sounds like sounds a big step. Re-write pricing on a per-user per-month / per-usage instance perhaps? As they're enterprise, that's where your growth is: scale.