and in order to thank all the uses' support and also as a return, dll suite introduced this free download service to help millions of pc users suffering from dll errors like sdbinst.exe.

How would the previous sentence be correctly capitalized?
Answer: And in order to thank all the uses' support and also as a return, DLL Suite introduced this Free Download Service to help millions of PC users suffering from DLL errors like sdbinst.exe.
you probably already know that virtually all other online services charge between 10%-30%. so, even if you use multiple reservation services, your profit margin increases for every reservation you receive from pragueinstantbooking.com.

How would the previous sentence be correctly capitalized?
Answer: You probably already know that virtually all other online services charge between 10%-30%. So, even if you use multiple reservation services, your profit margin increases for every reservation you receive from PragueInstantBooking.com.
translator - portuguese - latvian

How would the previous sentence be correctly capitalized?
Answer: translator - Portuguese - Latvian
stage-ready 100-watt combo amp with a custom 12-inch speaker

How would the previous sentence be correctly capitalized?
Answer: Stage-ready 100-watt combo amp with a custom 12-inch speaker