Just a note on the 8mm. Take along one of your tapes to try. The new 8mm digital cameras are not all compatible with the old analog tapes. The cheapest camera will not do the job.
I do the VHS and 8mm transfer here, charge $20.00/hour of your video plus the miniDV tapes or external HD.
Cheaper to do it yourself. One problem you will find is that if the video is not steady, breaks in the time code, it will usually stop a computer download. You have to sit and monitor every tape so you can restart the download every time this happens. You will not have this problem if you transfer it player to miniDV camera but then you end up with twice as many tapes as you have now.