Having a similar take over experience I have to strongly agree with John on this... ZERO excess value in the previous business... And it really doesn't matter too much what their investment was, their worth is what matters, and that is just in equipment assets... Why did they stop paying the rent? Were they actually successful or did it just seem that way? Request the books... How long was the previous shop open for?
There are many things that need extra consideration when taking over a previous shop...
Sorry in advance if my thoughts seem a little random...
Used equipment is just that, Used... You need to go over all of it with a fine toothed comb before valuing any of it... John's approximation is pretty accurate for well taken care of machinery, but if its been abused then its not even worth the 15-30% of original cost, if anything... I have just over 10 years of experience in the industry so I was able to ballpark these values myself, but you may want to find someone that can asses their value for you... Any issues come with upkeep/maintenance costs that should be deducted from their asking price...
From my experience you definitely want to start anew...
What do you want your image to be? Is that image right for the space/location?
You don't want any potential liability that the previous company may have riding on them currently... If you buy their business you are liable for anything that they have previously defaulted on... Ie past rent, loans, insurance issues...
My suggestion (the route I took)... Start a new business, buy the assets of the old business (if they are worth it) but not the actual entity, and renegotiate a new lease structure... We structured a 7 year lease with 3 5-year options... One thing to watch for is rent increase, market values can fluctuate drastically so I recommend agreeing on a standard percentage rate increase from the get go... Also make sure you know approximately where your utilities are going to fall and what of them if any are covered within your lease agreement... In your situation, not having a lot of experience in the industry you may want to negotiate a new lease at 3 years with 5-year options after that to give you that 3 year out if necessary (anything less than 3 years is pointless in my opinion)... The key is to leave yourself in the drivers seat and set things up so they are predictable... You can potentially use the 18 mos of existing lease to your advantage to come in with a lower lease rate...
--For example... The landlord can have the space empty for 18mos and have that renter default on the rent or he can sign a new lease with you guaranteeing x amount of years at maybe a slightly lower rate... This does require a cancelation of lease agreement between previous owner and landlord...
With how the events seem you are in the drivers seat currently... Tell them what you want and then come to a compromise that you are comfortable with if they don't accept your terms in the first place... Know what you can afford and stop there, everyone will try to stretch you for as much as they can get out of you so draw your line in the sand at a comfortable point... Remember, there are plenty of spaces that can support a coffee shop, so if the deal doesn't work out under your terms, go somewhere else... You don't want to put your blood sweat and tears into a business that doesn't have a completely stable foundation that you have set...
More into the specifics... Does he want 80k or 90k? (.75*120=90) Either way thats way too much...
I feel more information is needed on equipment to give a ballpark of worth...
How big is the space?
Where is it located? City, suburban, urban, stripmall?
Who owns the equipment? Is any of it under a lease agreement?, if so it has no worth to you...
There are a lot of pieces to this puzzle for an industry with such a small profit margin so you really need to be on top of everything...
Hopefully my rant has helped!
I wish you the best in your venture...
Cheers
Chris Zimmerman
Co-Owner/Operator Ellipsis Coffeehouse