Complex sentence: Repeaters are available for all the different GSM frequency bands, some repeaters will handle different types of network such as multi-mode GSM and UMTS repeaters however dual-and tri-band systems cost significantly more.
Split into simpler sentences: Repeaters are available for all the different GSM frequency bands. Some repeaters will handle different types of networks, such as multi-mode GSM and UMTS, repeaters however dual-and tri-band systems cost significantly more.