I have uninstalled Garageband due to problems. Now it seems I have to pay for it.

I've had some problems with Garageband when I tried to download extra content. I called Apple Support about a week ago and he said that one solution might be to uninstall Garageband and then reinstall in from Mac App Store.

I've now unnstalled Garageband. To download and install it again it seems I now have to pay for it. I've had my iMac since the end of December last year and it came preinstalled with Garageband. Apple Support is closed today because it's Sunday.

It's not a huge amount but I wonder if this is right?