Box blight - need new plants

[Localher0]

I need to replace 3 box balls which ha e succumbed to box blight. I have looked at Yew instead but 70cm domes/balls are about £300 each!! Can I get them any cheaper or is there something else I could use?

Ilex crenata (large topiary ball)

Pittosporum tenuifolium 'Golf Ball' (large to medium topiary ball)

Pittosporum tobira 'Nanum' (medium topiary ball)

Hebe 'Emerald Gem' (small topiary ball)

Some more ideas here: www.learningwithexperts.com/gardening/blog/think-outside-the-box-alternatives-to-buxus-sempervirens

I saw a magazine feature where teucrium had been used to replace box that had succumbed to blight.