Student or Learner
Please explain the following in red more easily.
Show how the purchase can be absorbed into, or netted off against, a third-party spend. For instance, if you sell new furniture, this can be incorporated into the process of buying a house, and financed by slightly increasing the amount borrowed on the mortgage. The consumer feels like they're spending the bank's money instead of their own, so it becomes easier to make the purchase.
The writer is rather fond (rather TOO fond for my taste) of switching word-classes. Spend is often a verb (as it is in the 2nd sentence), but in the first sentence it's a noun. If part of a purchase (in this case, a house with furniture added) is included in the net amount due, net is an adjective. The writer has invented (or used as part of a estate agent's/realtor's jargon) a new phrasal verb 'to net off', meaning 'to include in a net price'.