Can you maintain different brands?
Feasibility is checked against the model list and consumable/part availability. Owning a printer does not mean every model can be serviced.
Is there a fixed subscription price?
Pricing depends on the fleet and contract. First agree included operations, visits, materials and exclusions.
Can we start with one device?
Yes. Start with one printer and discuss expanding the scope after assessing the actual workload.
Are consumables and site visits included in maintenance?
The quote or contract defines coverage. Agree on materials, parts, visits and exclusions separately; regular maintenance should not be understood as unlimited repairs with any replacement parts.