Firstly please put future domains together in one post for appraisal where you have a lot of new registrations.
This is a very bad way to enter the industry and will result in you quickly losing investment money. Godaddy appraisals mean nothing and certainly cannot be used to try and ascertain a value of a current domain or one you are going to register - you will just end up throwing money away.
The sale you quoted happened 6 years ago and it is irrelevant what they are asking for it now. Anyone can ask whatever they want - it doesn't mean they will sell it for that. If they haven't sold it again in 6 years for more than they paid this is an indicator of how (un)desirable the domain is.
Finally the domain they bought is at least a recognised phrase with 224,000 exact match searches in google - 'arb lawyers' however is not with only 220 exact matches.
I would say this domain is worthless and I really would advise against registering more until you have read through the forum and got a feel for what sells in the industry. You have requested appraisals now on 4 fresh registrations (within the last few days) and they are all heading along the same route.
If my post sounds harsh I don't mean you to take it personally.
I would never advise anyone to base their selling price on our opinions here nor would I advocate buying domains to sell based on our valuations - yet that is what people are doing in essence with godaddy and other automated appraisals.