If your net worth is 10k and you have very similar requests an online will is probably fine.
If your net worth is north of 500k, and/or you want to make sure young beneficiaries are taken care of, or you have specific things you want in your living will... it might be worth a few grand to get it right.
Normally I'm all for the low cost/free option, but this isn't something you can fix after the fact and a simple easy to overlook mistake could cost tens of thousands of dollars. There are things that belong in a will, and there are situations that need trusts established.
For some things a well written trust, proper beneficiaries, and power of attorneys are better than a will. Actually let me take that a step further. If you have everything titled right, and you have a very well written trust then a financial will becomes almost pointless. Most financial assets and real estate are normally better off passing through beneficiary/POD designations or a trust rather than a will. This is especially true for tax deferred retirement accounts(you want beneficiaries) and real estate owned in a state other than the state you live in(you probably want a trust). If you have a good trust and proper titling on accounts then by the time they read your will all that will be left is who gets your TV and furniture.
Living will is still pretty important.