Well you gotta get a little tried of the dumb questions some people ask. This one takes the cake too. A CD-ROM drive on a Atari STE? They never came with one, and the only way you can add one is to buy an extremely expensive and rare SCSI host adaptor (ICD's the Link 2 or similar product, $100+ value) and external CD-ROM drive. Plus there was no pic or anything mentioned about a CD-ROM... But he should of tactfully replied with my above points instead of the way he did...
I don't think it was a dumb question. The picture (yes there is one) clearly shows a cdrom drive. Also this seller has the habit of "not mentioning" stuff, but showing extra stuff in the photos, so it is quite normal to ask.