This depends greatly on where the business is located, the quality of its fixture and fittings, how successful it is and whether you are buying a freehold or leasehold business.
Fixtures and fittings:
Running a deli requires some fairly expensive equipment. It would cost around tens of thousands to buy all the equipment needed to start up from scratch, including ovens, refrigerators, a deli counter and meat slicer. So an important job will be to assess the condition and suitability of existing equipment.
If buying freehold, the price will include the bricks and mortar value of the building as well as the commercial value of the business and its fixtures and fittings. Owning a freehold is what most business owners aspire to, since they are not restricted by lease terms and as the value of the business and building rises so does the potential return you can get when you sell up.
For these reasons, freehold businesses are considerably more expensive. Prices start around the low hundreds of thousands and can rise to well over half a million, but remember that the bank may lend up to 75%.
Buying a leasehold means paying for the business, fixtures and fittings, goodwill and the right to occupy a premises for the length of the lease. Rental costs can vary - a small deli in the north of England may cost half the price of a large shop in Oxfordshire.
Since you are not buying the building, the cost of a leasehold delicatessen will be considerably cheaper than a freehold and depends to greater extent on the commercial value of the business.