Trying to get as much money as you possibly can fits the definition of greed, but that really doesn't matter. You want to get as much money as you can without feeling guilty.<p>There are different ways to determine the worth of a hosting company. One way is to look at revenues + growth in revenues + number of customers - risks. Another way is to look at the amount of money you'll get if you were to sell, minus the effort needed to sell.<p>Hosting companies are worth very little when you sell them. You experienced this yourself when you bought a competitor for 60k. So by comparing the revenues + health of that company with the merged company, and you'll get a reasonable valuation. I've seen hosting companies get sold for less than $30 per customer, so the number you'll get at is going to disappoint.<p>If your hosting company is still growing quickly you have to make an estimate of the value of the company in a couple of years, and your total contribution to that. Since hosting companies that grow too quickly always destroy themselves growth is bad indicator of value.<p>The bottom line - hosting companies don't create much value and the little value they have is decimated when sold. You don't have any IP to speak of, and it's a high-maintenance environment (unless you outsource everything, but the hosting companies I know still had to deal with all difficult issues themselves). Your partner also has to find somebody else to take your place (I assume), which can cost up to a year's salary easily. All in all, your partner isn't getting a great deal here either.<p>As the saying goes - if both parties are unhappy the deal is fair. And that's what it looks like from here.<p>Postscript:<p>- once you leave, your partner cannot leave anymore. He can't just walk away with 70k. He might not want to leave, but knowing that leaving isn't really an option can be depressing.<p>- most hosting companies go kaput within the first 5 or so years. I haven't looked at the data since I left the scene, but chances are your company will be gone in 3 years. You didn't mention any problems in the OP, so I take it's all sunshine now. However, if you're leaving (partially) because of burn-out (boredom) then burn-out is probably not far behind for your partner. In that case, you'll get 45% of 150k, and he'll end up with 100% of nothing + a total burn out.<p>- if the person your partner hires to replace you doesn't work out - see above. Big risk for him there too.<p>- in his position, how would you feel about your partner leaving and having to pay him 70k? Would you gladly give him 110k (or whatever amount you had in mind)?