What buyers in Turkey are actually deciding
The recurring question in Turkish sales teams is ownership. Customer relationships are strong, personal and often held entirely by individual salespeople, together with the messaging thread, the agreed discount and the informal understanding about payment terms. Buying a CRM here is mostly a decision to move that from a set of private phones into something the company holds.
The second decision is regulatory rather than commercial. Turkey is outside the European Union and has its own data protection regime, so the assumption that a European compliance story covers you is not safe. That is a question for your own adviser, and the useful thing a vendor can do is answer factual questions in writing.
Messaging is the primary channel, and usually the least controlled
For a great many businesses here, more enquiries arrive by message than through any other route. The channel is not the problem. The problem is that it is personal, so nothing is measurable, nothing is transferable, and a departure takes the history with it.
An open quote is a commercial exposure
Where input costs move, a price left open indefinitely is not a courtesy, it is a risk. Recording an explicit validity date and reminding the seller before it lapses is an unglamorous discipline that protects margin without requiring anyone to have an awkward conversation late.