How the bill is charged
Most CRM vendors price in US dollars. Check which card or corporate account will carry the charge, whether monthly is available while you test, and what an annual commitment locks in. A tool with a real free tier lets you delay that decision until the pipeline is running.
Interface language
HelloGrowthCRM is English-first, which in Nigeria removes a problem rather than creating one: business English is already the working language of quotes, contracts and email, so reps do not translate anything. Customer messages in Pidgin, Yoruba, Igbo or Hausa are stored and searched as typed.
Invoicing and collection reality
The CRM should hold the quote, the approval and the chase, while your accounting tool issues the VAT invoice under the tax rules you already follow. Payment happens by instant bank transfer, a payment link, or POS at delivery, so record the promised method and date on the deal itself. That single field turns a vague follow-up into a specific one.