I will answer your question for the benefit of any seller in Texas who is reading this blog. I will NOT make the assumption that they are fairly standard "as with all other states" because I do not know the laws and customs of other states, except for the 2 that I am licensed in.
Some of the fees are negotiable, which needs to happen when your Realtor brings you an offer to purchase your house. Some of the fees are "customary", which means the majority of sellers will be paying them. But consider the investor who is snaging a fixer-upper from the little ol' lady who can't afford to even paint it, he will give the seller a fixed price that includes paying ALL closing costs on both sides of the transaction, and this is allowed in Texas.
In all states, there are Federal laws that prohibit some buyers from being charged for certain fees IF they are using any government insured financing, such as FHA or VA loans. In those scenarios, the seller will have to pay the fees. (Check with your title company when you get an offer.)
Since most of the fees are a fixed dollar amount, the total does not vary too much according to the sales price, but consideration should be made for the range that the price is in. The highest cost for a seller, not counting Realtor's commission, is the Title Policy. These rates are established by the state insurance board. You can use a 1% rule of thumb if you wish, but it is usually a bit lower than that. (See a rate card at your title company.) As the other Realtors on here have said, we really should not count "taxes" for the year as a closing cost. However, the seller MUST be prepared to pay his pro-rated share of taxes at closing.
The average price range around this general area runs from $150,000 to $200,000 and on up. In that range, my rule of thumb for sellers to use is to calculate 2% of the sales price, plus the amount of the commission you agreed to pay when you signed the lisiting agreement with your Broker. Then add on the pro-rated taxes for the number of months to closing, and any homeowner's association dues, or late fees. In other words, all of Mr. Seller's accounts have to be paid up to date when the title changes hands.
For seller's of lower priced properties, the total may be slightly higher than 2%, but I have never missed it by much in 33 years of going to closings with my clients. I have noticed a recent trend for third-party agencies to slowly raise their fees, so always check with your title company for an up-to-date quote. In Texas, all closings usually take place at a title company which is under the auspices of the State Insurance Board. If anyone out there can add to or correct anything I just said for our California brothern, please do.
Best of luck on YOUR next closing!
ULTRA Real Estate Services