Lachlan Young said:
Oi!

I already thought that some of the Wollensaks were hugely underrated - it was just the Ilexes I was less sure about. How rare are these Ilex wides anyway?
Lachlan
65 and 90 Ilexes are around, often badged Caltar, but unless you make a lucky find both are on or above the upper end of your price range and the shutters will probably need CLAd. 47s are too short for you and quite uncommon. Come to think of it, the 65 just barely covers 4x5, you'd be better off with a 90. Use Google, search for Acugon to learn more about them.
Use Google more, search eBay completed auctions more. Part of the LF way of being, especially among those of us with inadequate budgets for what we hope to do, is DIY. This goes for information as well as for gear.
If you don't have a decent normal lens yet for your 4x5, concentrate on getting one before going farther.
You asked about Heliars. Heliar is a Voigtlaender trade name. Before Cosina bought the right to use V's trade names Heliar usually meant a 5/3 very nearly symmetrical lens. Few other makers used the formula. Dallmeyer Pentacs are f/2.9 Heliar types. EKCo made a handful: 50/4.5 & 75/4.5 Enlarging Ektars;, 63/8 Microfile Ektar; 100/3.5 & 105/3.7 Ektar. There are some heliar formula process lenses, all f/9 or thereabouts, quite narrow angle, and nearly always found in barrel. Sounds odd, but Voigtlaender's Apo Skopar process lenses are heliar types.
If you want a Heliar that will cover 4x5, you'll have to buy a Voigtlaender Heliar. Or an Apo Lanthar. Out of your price range and way out of your price range, respectively.
This will sound odd coming from me, since I have a bad case of it (not with respect to 35 mm gear, though), but acquiring lenses solves little. Get what you can afford, go shoot and be happy. Most of all, go shoot.
If you must buy lenses, pay bottom dollar or don't buy. Don't try to keep up with the Gallis of this world unless you can wheel and deal as Jim does.
There's a pretty little 165/6.3 CZJ Tessar closing tomorrow on eBay. Too exensive for me (to give you an idea, the last /6.3 Tessar I bought was a 150 CZJ in barrel, 1912 vintage, that cost 16.05 euros plus postage, the one before was a 5 3/8" B&L in Compound, also 1912 vintage, that cost $25 at a camera show) but it might do for you IF you have a shutter you can hang it in front of. If not, don't buy it.
Yours in bottom fishing,
Dan