I think it very much depends on your calling plan, and you can also buy bundles to use in Turkey for calls/texts too. On my plan (iphone) each text is 40p. Lots of info on their website
ICR Travel Holiday Forum for Icmeler & Marmaris with reviews of hotels and real customer reports
https://www.icmeleronline.com/forum/
https://www.icmeleronline.com/forum/viewtopic.php?f=32&t=14090