There are a lot of considerations you didn't mention.  (I have no idea what you mean by "ob connection").

• Standard / Advanced / Premium?
• Any enhancements?
• CRM integrated?
• Sage Intelligence / external reporting solutions?
• New server required?
• Big data?
• Significant use of Custom Office?
• ...

Upgrades can be anywhere from 10-50 hours work just to go Live (...plus time for workstation installs and after upgrade support...), for someone who doesn't need to learn the process.  For a novice, add time to read through all the documentation, and time for a learning curve (since a number of things a Partner does as best practices will not be in the Sage documentation).

not sure what you mean by standard/ advanced/ premium.

we have multibin by scanco and credit card processing

no crm

we have about 3 custome crystal reports

i doubt we have big data

no on use of custom office.

we have been using Mas 90/sage 100 for almost 20 years.

Payroll?

yes about 10 employees.

yes about 10 employees.

Then the PR upgrade portion will be your biggest headache.  v2017 is the old version, and upgrading involves a significant effort to get that converted.  Absolutely get your Sage Partner involved (i.e. someone who has experience with the PR 2.0 upgrade process).  Do not attempt on your own.  Seriously.

We have had difficulties working with ScanCo in the past, so that may add time.  The custom reports should convert quickly, unless they are for a module converting to Framework during the upgrade (which is the case for your PR)... requiring redevelopment from scratch.

MAS90 is the old name for Sage 100 Standard, which I am guessing you have.  New server (vs. same server) for Standard is not a big deal.  Advanced / Premium are the client-server versions (Premium using a SQL back end).

If you get a quote for 20hrs, jump on it.  I'd estimate significantly more.