You can get a Lodge 7 1/2 qt porcelain-coated DO from Wal-mart, picked up at the store, ordered online, for about $80. No worries about spaghetti sauce, sauce piquant, vinegar, etc., and no shipping charges.
Also, made in Denmark until about 1980 by Copco, a porcelain stove manufacturer, are some nice DO's on Ebay. Be very selective about quality of the porcelain (chips, etc.). The Copco #4 is about 7 qts, the #3 about 5 or 5 1/2 qts. I picked up an almost perfect #4 in a local shop for $25 recently. The shop is closed Sun, Mon, Tues and the vendors reload their areas. Opens 10 AM Wed, best time to be there. I saw that beautiful DO about 10:05, and didn't hesitate.
Also picked up a Lauffer oval roaster with lid, English porcelain-coated CI, off Ebay recently. Kind of disappointed how shallow it was, until I bought a chuck roast, looked at the Lauffer, YES! moment. Bed of sliced onion, chuck roast, onion, bell pepper, celery, seasonings, in the oven at 300 degrees for 3 hours.... Pull out the roast, use an immersion blender on the stuff in the pan, awesome gravy.
You can leave the porcelain-coated stuff soaking in hot soapy water, basically just rinses off.